Materials evaluation and environmental monitoring utilizing an acoustic resonance
Materials evaluation and environmental monitoring utilizing an acoustic resonance
复制标题
利用声共振进行材料评估和环境监测
DOI：
10.1115/lemp2020-8503
复制
发表时间：
2021
期刊：
影响因子：
--
通讯作者：
H. Tohmyoh
中科院分区：
文献类型：
--
作者：
H. Tohmyoh;K. Hiwatashi;H. Tohmyoh
本文介绍了作者开发的利用声共振的材料评价和环境监测技术。当超声波通过薄层时，透射系数和反射系数在共振频率处出现最大值和最小值。我们称之为声共振。聚合物膜的声学特性，例如，声阻抗、超声速度和密度可以通过观察在水/膜/反射板界面处发生的声共振来确定。声共振发生在反射板/膜/外部环境界面处，该界面根据外部环境敏感地变化。通过使用该装置，试图监测作为外部环境的水的温度。
This paper presents the materials evaluation and environmental monitoring techniques utilizing the acoustic resonance, which have been developed by the authors. When the ultrasound passes through thin layer, the transmission and reflection coefficients take their maximum and the minimum values at the resonant frequency. We call this acoustic resonance. The acoustic properties of a polymer film, e.g., the acoustic impedance, ultrasonic velocity, and density, can be determined by observing the acoustic resonance, which occurs at the water/film/reflection plate interface. Acoustic resonance occurs at the reflection plate/film/outer environment interface sensitively changes depending on the outer environment. With use of this, the temperature of the water as an outer environment is tried to be monitored.